What gases were in the atmosphere of ancient earth?

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What gases were in the atmosphere of ancient earth?

2007-03-12 04:07:22 · 3 answers · asked by Pepper171 2 in Science & Mathematics ➔ Earth Sciences & Geology

3 answers

Before life, there was more methane and ammonia, and less CO2 or N2.

2007-03-12 04:13:31 · answer #1 · answered by Professor Beatz 6 · 1⤊ 0⤋

Read below:
http://en.wikipedia.org/wiki/Urey-Miller_experiment

2007-03-12 04:10:29 · answer #2 · answered by Brian L 7 · 0⤊ 0⤋

One that wasn't present (or hardly any of it) was oxygen.

That was put there by plants.

Without them, none of us oxygen breathing critters would be here.

2007-03-12 05:34:35 · answer #3 · answered by tehabwa 7 · 0⤊ 0⤋